In 2000, only one of these Arctic beasts was resident in the UK. Now there are 16. Is there any benefit to captivity for this climate-ravaged species?

By the 1990s though, polar bears had become the focus of campaigns to end the caging of big, intelligent, far-roaming animals. British zoos seemed to accept the argument that these carnivores, whose wild home range could be as vast as 135,000 square miles, could not flourish in a zoo enclosure less than a millionth of that size. By the turn of the century, just one polar bear remained in Britain.

Now, however, the polar bears are back. In the last year, Jimmy’s Farm, the farm and wildlife park run by farmer, conservationist and TV presenter Jimmy Doherty, has taken in four. A further 12 bears live in three other British parks. Are these captive animals the best hope for a climate-challenged species whose wild population has dwindled to 26,000? Or should they not be here at all?

The fact that a 49-year-old pig farmer owns four polar bears could be the most bizarre farm diversification ever. “Owner of polar bears. It makes me sound like I’m a Nordic god,” muses Doherty, resplendent in double denim. How about the British Tiger King? “Jimmy Exotic. That would be something. I haven’t got the outfits he’s got,” says Doherty of the eccentric Joe Exotic from the Netflix series. “And I won’t be ringing up Trump to get me out of jail.”